MAX6887FETE+T

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Power Management Integrated Circuits (PMICs) are commonly used in consumer electronic products for power supply regulation. The MAX6887FETE+T is one such PMIC intended for use in battery-powered applications. It belongs to the Supervisory family of devices, and offers a variety of features to provide system protection, reset timing, and voltage monitoring. This article will examine the application field of the MAX6887FETE+T and how it works to improve system performance.

Application Field

The MAX6887FETE+T is used in microcontrollers, digital processors and other embedded systems with battery-poweredvoltage rails. It offers a variety of preset functions designed to keep power supply voltages within safe operating parameters. It can be used as an overvoltage detection circuit and power-on reset (POR) timer. As a POR timer, it functions by monitoring and automatically resetting the system if the voltage is outside of specified limits.

It also provides a low-cost and compact solution for battery-powered systems. It has a wide operating temperature range of -40oC to +85oC and can be programmed to detect abnormal battery voltages and initiate a system reset as needed. The MAX6887FETE+T is available in a 6-pin SOT23 package, making it small enough to fit into almost any system.

Working Principle

The MAX6887FETE+T includes both an overvoltage detector and a POR timer. The overvoltage detector monitors the voltage of the power supply and will trigger a reset pulse if the voltage exceeds a preset level. The POR timer will then hold the reset pulse, keeping the system in reset until the voltage returns to within safe levels. This functionality helps ensure the power supply is always kept within the specified operating range, protecting both the system and the user.

The MAX6887FETE+T also provides a variety of protections against short-circuit and overcurrent conditions. It can be programmed to detect current levels that are beyond the desired range and initiate system reset to help prevent further damage.

Finally, the MAX6887FETE+T also includes an adjustable watchdog timer. This allows the system to periodically check for critical errors and initiate a reset if necessary. This ensures that the system does not become unresponsive due to a system error or unexpected program execution.

Conclusion

The MAX6887FETE+T is a popular choice for battery-powered applications that require power-supply regulation and monitoring. Its small form factor and wide operating temperature range make it well suited for use in compact embedded systems. Its built-in overvoltage detector and POR timer provide reliable system protection and help protect against abnormal current and voltage conditions. Finally, the adjustable watchdog timer ensures the system remains responsive and will automatically reset if an error occurs.

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